LEWISTON - There is a hazardous weather outlook for the region throughout the weekend and into next week. Starting Friday, thunderstorms with heavy rain are expected to develop late morning and last through the evening. A Flash Flood Watch is in effect for Southeast WA. More thunderstorms are forecast to move into the area from Oregon this evening and traverse eastern Washington overnight. These storms could produce heavy rain and gusty winds. Sunday through Thursday can expect another round of thunderstorms across the region. This Hazardous Weather Outlook is for portions of North Idaho, North Central Idaho, Central, Northeast Washington and Southeast Washington.